One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,8)(3,6,4,7)(9,10,13,12)(11,14,15,16)(18,22)(19,25)(20,27)(30,32)(34,35)(36,43)(37,45)(47,48)(11,15)(14,16)(19,25)(23,28)(26,31)(30,32)(33,34,38,35)(36,39,43,41)(37,40,45,42)(44,47,46,48)(1,3,5,4)(2,6,8,7)(9,11)(10,14)(12,16)(13,15)(17,18)(19,23)(20,24)(21,22)(25,28)(26,30)(27,29)(31,32)(33,35,38,34)(36,41,43,39)(37,40,45,42)(44,47,46,48)(1,2)(3,6)(4,7)(5,8)(9,10,13,12)(11,14,15,16)(17,19)(18,23)(20,26)(21,25)(22,28)(24,30)(27,31)(29,32)(33,36)(34,39)(35,41)(37,46)(38,43)(40,48)(42,47)(44,45)(1,4,5,3)(2,7,8,6)(9,12,13,10)(11,16,15,14)(17,20,21,27)(18,24,22,29)(19,26,25,31)(23,30,28,32)(33,37)(34,40)(35,42)(36,44)(38,45)(39,47)(41,48)(43,46)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.